Compared to 2008-2009, it's hardly a blip. I can't come up with any fundamentals driving the selloff of MWE in recent weeks, so it's probably well-heeled funds raising cash. I'd sure like to see it break below 50 so I could get some at fire-sale prices.

Having invested in KMP, EPD and PAA for a long time I would caution investing with the expectation of capital gain. These are limited partnerships. When you buy units you become a limited partner with all the implied risks. However Kinder Morgan, Enterprise and Plains have been enormously successful in executing their business plan and provide a reliable source of income for their investors. Tax deferred.